The parties involved had published online articles in breach of the prohibition of election advertising on Cooling-Off Day and Polling Day of the 2016 Bukit Batok By-Election, an offence under Section 78B(1)(a) of the Parliamentary Elections Act*.

Upon careful consideration of all the circumstances of the cases, including the nature of the publications, the Attorney-General's Chambers decided to administer stern warnings to all parties.

Should any of the parties commit similar offences in subsequent elections, the stern warning that was administered can be taken into consideration in the decision to prosecute.

The prohibition of election advertising on Cooling-Off Day and Polling Day allows voters time to step back from the excitement and emotion of campaigning, to reflect on the issues at stake before casting their votes.

The Cooling-Off Day breaches detected during the 2016 Bukit Batok By-Election go against the spirit of the election rule. Left unchecked, such breaches can undermine public trust in Singapore's electoral process.

Candidates and their supporters are expected to abide fully by all relevant laws on Cooling-off Day and Polling Day, and should refrain from conduct that goes against the spirit behind the prohibition against campaigning on Cooling-off Day and Polling Day.

Anyone found to have breached the rules in future elections will be subjected to Police investigations and may face prosecution.

*The offence is punishable with a fine not exceeding $1,000 or to imprisonment for a term not exceeding 12 months or to both.